1. Measurement of tryptic activity in intestinal juice as a diagnostic test of pancreatic disease;Cook, H.B.; Lennard-Jones, J.E.; Sherif, S.M.; Wiggins, H.S.;Gut,1967
2. The measurement of pancreatic secretory function;de Reuck, A.V.S.; Dreiling, D.A.; Janowitz, H.D.,1962
3. Pancreatic exocrine function in neoplastic and inflammatory disease: a simple and reliable new test;Churchill, London Lundh G.;Gastroenterology,1962
4. Diagnostic investigations of the external pancreatic secretion;Lundh, G.;Proc. Congr. int. Soc. Surg,1965
5. A modified spectrophotometric determination of chymotrypsin, trypsin, and thrombin;Hummel, B.C.W.;Canad. J. Biochem,1959